Pipe, sewer, and conduit.



G. L. SMITH.

PIPE, SEWER, AND oimnun'. APPLICATION FILED MAR. 29. 1910.

Patented Nov. 14,1911.

2 SHEETSSHEET 1.

WIT/@3355. I

Allarney vision of-an improved form of pipe made i GODFREY LEWIS SMITH,OF NEW'PORT NEWS, VIRGINIA.

PIPE, SEWER, AND .CONDUIT.

Specification of Letters Patent.

Application filed March 29, 1910. Serial No. 552,168.

To all whom it may concern:

Be it known that I, [GODFREY Lnwrs' SMITH, a citizen of the UnitedStates, residing at Newport News, in the county of Warwick and State ofVirginia, have invented certain new and useful Improvements in Pipes,Sewers, and Conduits, of which the following is a specification. I

My invention relates to improvements in pipes, sewers, and conduits, andparticularly to pipes and conduits formed from cement, clay or any othermaterial adapted to be molded into the desired form'and which is not initself of sufficient tensile strength to withstand the great strains to'which it is liable to be subjected and which therefore requires metalreinforcement. I

The object of my inventionis the proin a series of inolded sections,said sections being of such size as to be transportable and being eachprovided with a bell portion at one end and a spigot at the otheradapted to be readily placed in interlocking position, and to brace saidsections against both internal and external pressure and increase thetensile strength of the pipe I have insorted therein a network of metal.

A further object of my invention is the provision of a reinforced moldedsectionalv pipe which shall be provided with means for readily lockingthe parts together to form a practically unitary structure which can beimmediately used without the necessity for delayingto allow the partsthereof to dry or settle into position.

To attainthe desired objects, my invention comprises a sectional pipehaving interlocking ends and provided with reinforcing means locatedcentrally of the thickness of the pipe, certain of said reinforcingmeans projecting from the end of the main portion of the section andbeing adapted to engage similar projections on the adjacent section forlocking them in tight engagement, said sections each being provided withgaskets for insuring a tighter joint therebetween.

In't-he drawings I have illustrated the principles of my invention andhave shown views ,of pipes constructed in tujC-lll'tlzli'hft with thesaid principles, but it will be understood that I may make numerouschanges gether.

in the details of construction thereof without departing from the spiritof :the invent-ion.

Figure 1 represents a perspective view of a portion of pipe. Fig. 2represents a simi- Patented Nov. i, 1911.

lar view with a portion broken away to illustrate more clearly theconstruction of the pipe and the method of locking the sectionstogether. Fig. 3 represents 11 enlarged view partly in sectionillustrating in detail the locking means about to be. locked to- Figs. 4and 5 represent fragmentary enlarged sectional views illustrating thesections as they appear when locked together, Fig. 5 showing a modifiedform of locking members, and Fig. 6 represents a perspective view of thetwo locking ends. of the modified form shown in Fig. 5.

The numeral 1 designates the cement pipe sections, said sections beingformed with the spigot 2 on one end and thebell 3 in-the other, saidbell being adapted to receive the spigot of the adjacent section, andformed at each end of the sloping face of said bell and spigot portionsof the pipe is a recess 4, said recesses being adapted toengage thereinthe gasket 5, said gasket being of slightly larger size than therecesses and being adapted to be compressed therein as the sections areforced together, thus forming a liquid tight joint between saidsections.

To brace the various sections I form therein and have disposed aboutcentrally of the thickness of the side of the pipe a series oflongitudinally disposed metal bars 6 each terminating in a block 7 whichprojects from the face of the pipe, said bars being so arranged that theblocks project from the outer face of the bell portion of the pipe. andfrom the inner face of the spigot portion of the pipe, as clearly shownin Fig. 3. To further brace the pipe I have located therein surroundingand bearing against the bars 6 a series of metal bands 8 having theirends secured together by rivets or bolts 9, said rivets also beingemployed if desired to secure the hands to the bars 6.

in the preferred form of the invention-as shown in Fig- 1 3 and 4. itwill be observed that l" have fornnw in the. hlocla 7 a firoove 10. thegroove it; in the bio of the bell end of the pipe extending at an angle.to the axis of the pipe and being of size to receive the toe 11 formedon the other block by its groove 10, said block on the spigot portionalso makingan angle with the axis of the pipe and the front edges of thegrooves in the blocks of the bell, and spigot portions of the pipe lyingin alinement with each other when the sections of the pipe are forcedinto interlocking engagement.

To secure the sections of pipe together, I first wedge one section inposition in the I trench and place the next in an endless sling ofsuitable material. which passes over a sheave, the weight of the pipethus being supported by the sling while the pipe can berreadily revolvedon account of thesheave.

' I- then bring the section so supported on a level with the wedgesection when the bell of the one will receive the spigot of the other,suitable recesses 12 being formed adjacent each of the blocks of onesection to -receive;.the blocks of the other.

' sections are now forced into interlocking en- The two ga ement, whentoes 11 of one section will be rought into alinement with the grooves 10of the block of the other section. By any suitable mechanism I rotatethe section in the sling until the two sections, by

' the wedging action exerted by the blocks on account of the angle ofthegrooves, are

forced tightly against the gaskets 5, thus forming a watertight joint.It will be understood that said gaskets may be formed of any suitablematerial such as rubber, tarred hemp, parafiined cotton or the like, andby varying the size of the gaskets a rigid or flexible'joint may beformed, the gaskets being made either so small that the sections andblocks will at all points make tight engagement with each otheror beinglarger so thatthere will be a little play between the ends of the oneset of blocks and the rear face of the grooves of the other, thesections sections the gasket will be compressed and the toes 11 willmove to bear against the being prevented from spreading apart while inthe case of the slight sinking of one of the;

rear of the grooves, thus permitting the pipe to adjust itself.

It will be observed that I provide in the ends of' the sections one ormore radial grooves=13, there being coincident grooves.

on the faces'of the adjacent sections, and

after the sections are in position 1 drive into said. grooves the pins14 which prevent independent rotative movement of the sections. 1

While the gaskets are especially adapted for use with smaller pipes theymay also be employed in larger ones, but in the interest of economy Iprefer to use with larger pipes a cement or mortar joint, the meetingedges recesses 15 tapering toward the face of the pipe, when it ispossible for a person to enter of the two pipes having formed thereinre-. .cesses which together provide the annular the pipe one of saidrecesses 15 being-provided on the'inside to receive the filler 16,

, ferred form, orwhen the pipes can be conveniently rotated but a slightamount, as is the case with pipes having a fiat'base. In this form ofthe invention I dispense with the large recesses 12 and secure thepipesvby a springlock; In this form, the spigot member is substantiallythe same as in my other form, the only difference being that I form in.the rear of theblock thereof the groove 17 while on the endof the blockof v the bell member-I provide a projecting cam lug 18 adapted when thesections are locked to fit into the said groove, the groove 17 beingconsiderably wider thanthe thickness of the lug. Formed in the bellportion above or exteriorto the bars are recesses 19, and

in operation the two sections having been placed in interlockingposition I force them toward each other, the cam lug bearing against thetoe 11 of the other block and riding up thereon and the end of the'barbeing sprung up into the recess 19, forcing the pipes together until thetoe portion of the bar bearing the lug drops into the groove 10 oftheblock in the bell, when the parts are locked together'as shown in Fig.5. If desired I may then slightly rotate the members to wedge them moretightly together as is done with the other form of my invention, the-lug18 moving in. the groove 17 until it strikes the side thereof.

From the foregoing description taken connectionwith the drawings theconstruction of my pipe and the method of securing the sections togetherwill be readily understood and it will be apparent that I have provideda strong, simple, cheap and durable pipe braced against both internaland external pressure, which is provided with longitudinal bracesterminating in inter- .locking portions for securingthe sectionstogether, said bracing and locking means beingentirely within the pipeand the joints of the pipe interior and exterior to said means beingmade waterproof to prevent the oxidation or other deterioration of saidmeans, and that I provide a pipe which will prove practical and.efiicient in every particular and will fulfil the desired objects.

I claim: Y

1. A concrete pipe composed of a plurality of sections havinginterlocking bell and spigot portions at their ends, said sections eachhaving a plurality of longitudinally.

disposed bracing members formed therein, annular bands in the pipesections passing around the various longitudinal members for binding thesame together, and interlocking male and female portions formed onopposite ends of the longitudinal members and projecting inward from thebell and out ward from the spigot end for engagement with thecorresponding member of the adjacent section to lock said sectionstogether.

2. In concrete construction, a metal framework comprising a series ofannular bands,

longitudinally disposed members secured to said bands and forming inconjunction therewith a tubular frame-work, a concrete facing on theinterior and exterior of the frame-work to transform the same into a isolid-walled pipe, said pipe having a spigot portion at one end and abell portion at the other, and the longitudinal members eachhaving' ajaw portion projecting inward from the bell end of the pipe and a jawon.

the other end projecting outward-radially from the spigot end of thepipe, said jaws of the bell end making interlocking engagement with thejaws of the spigot end of the adjacent pipe section for locking them to-'gether. In testimony whereof I afiix my slgnature,

